If you want to run Windows from a Virtual PC image (running on Windows 7) instead of testing on Hyper-V, VMWare or physical hardware, you will need to update the “Validation” settings of your Task Sequence.

Change the processor to “13MHz” in the screenshot below (which is what the processor is emulated at):

Boot Camp Assistant will set-up your partitions on disk for you automatically. However, it formats the disk so that you cannot create any additional primary partitions. To remedy that, I create a Virtual Hard Disk (VHD) from within Windows and edit it’s bootloader to be able to switch between multiple installations of Windows instead of burning some Linux disk partitioner software and manually creating everything. This way, OS X is installed clean from the Lion image, and doesn’t interfere with my multiple Windows 7 test OSes.